GB2380354A - Method and apparatus for reducing pool starvation in a shared memory switch - Google Patents

Method and apparatus for reducing pool starvation in a shared memory switch

Info

Publication number
GB2380354A
GB2380354A GB0301250A GB0301250A GB2380354A GB 2380354 A GB2380354 A GB 2380354A GB 0301250 A GB0301250 A GB 0301250A GB 0301250 A GB0301250 A GB 0301250A GB 2380354 A GB2380354 A GB 2380354A
Authority
GB
United Kingdom
Prior art keywords
pool
shared
buffers
shared memory
reserved
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0301250A
Other versions
GB2380354B (en
GB0301250D0 (en
Inventor
David A Brown
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mosaid Technologies Inc
Original Assignee
Mosaid Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24501343&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB2380354(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mosaid Technologies Inc filed Critical Mosaid Technologies Inc
Publication of GB0301250D0 publication Critical patent/GB0301250D0/en
Publication of GB2380354A publication Critical patent/GB2380354A/en
Application granted granted Critical
Publication of GB2380354B publication Critical patent/GB2380354B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/30—Flow control; Congestion control in combination with information about buffer occupancy at either end or at transit nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/10—Packet switching elements characterised by the switching fabric construction
    • H04L49/103—Packet switching elements characterised by the switching fabric construction using a shared central buffer; using a shared memory
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/20—Support for services
    • H04L49/201—Multicast operation; Broadcast operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/25—Routing or path finding in a switch fabric
    • H04L49/252—Store and forward routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9047—Buffering arrangements including multiple buffers, e.g. buffer pools

Abstract

A switch includes a reserved pool of buffers in a shared memory. The reserved pool of buffers is reserved for exclusive use by an egress port. The switch includes pool select logic which selects a free buffer from the reserved pool for storing data received from an ingress port to be forwarded to the egress port. The shared memory also includes a shared pool of buffers. The shared pool of buffers is shared by a plurality of egress ports. The pool select logic selects a free buffer in the shared pool upon detecting no free buffer in the reserved pool. The shared memory may also include a multicast pool of buffers. The multicast pool of buffers is shared by a plurality of egress ports. The pool select logic selects a free buffer in the multicast pool upon detecting an IP Multicast data packet received from an ingress port.
GB0301250A 2000-07-24 2001-07-20 Method and apparatus for reducing pool starvation in a shared memory switch Expired - Lifetime GB2380354B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/624,276 US7007071B1 (en) 2000-07-24 2000-07-24 Method and apparatus for reducing pool starvation in a shared memory switch
PCT/CA2001/001049 WO2002009364A2 (en) 2000-07-24 2001-07-20 Method and apparatus for reducing pool starvation in a shared memory switch

Publications (3)

Publication Number Publication Date
GB0301250D0 GB0301250D0 (en) 2003-02-19
GB2380354A true GB2380354A (en) 2003-04-02
GB2380354B GB2380354B (en) 2004-01-14

Family

ID=24501343

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0301250A Expired - Lifetime GB2380354B (en) 2000-07-24 2001-07-20 Method and apparatus for reducing pool starvation in a shared memory switch

Country Status (8)

Country Link
US (7) US7007071B1 (en)
KR (1) KR100812750B1 (en)
CN (1) CN100373885C (en)
AU (1) AU2001276216A1 (en)
CA (2) CA2415952C (en)
DE (1) DE10196447B4 (en)
GB (1) GB2380354B (en)
WO (1) WO2002009364A2 (en)

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Also Published As

Publication number Publication date
US20060259572A1 (en) 2006-11-16
US7996485B2 (en) 2011-08-09
US20100250699A1 (en) 2010-09-30
DE10196447B4 (en) 2020-04-23
CA2700321C (en) 2014-12-09
US8630304B2 (en) 2014-01-14
US7403976B2 (en) 2008-07-22
GB2380354B (en) 2004-01-14
US20140092743A1 (en) 2014-04-03
KR100812750B1 (en) 2008-03-12
US9083659B2 (en) 2015-07-14
CA2415952A1 (en) 2002-01-31
US20150365333A1 (en) 2015-12-17
US7743108B2 (en) 2010-06-22
US20080250116A1 (en) 2008-10-09
DE10196447T1 (en) 2003-09-11
GB0301250D0 (en) 2003-02-19
KR20030019608A (en) 2003-03-06
WO2002009364A2 (en) 2002-01-31
CN100373885C (en) 2008-03-05
US20110286455A1 (en) 2011-11-24
US7007071B1 (en) 2006-02-28
CA2700321A1 (en) 2002-01-31
AU2001276216A1 (en) 2002-02-05
WO2002009364A3 (en) 2002-09-06
US9769080B2 (en) 2017-09-19
CA2415952C (en) 2011-01-04
CN1444812A (en) 2003-09-24

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20210719